Решите уравнение: 1) 5х^-1 -6=0 2) 3+10х^-1=0 3) (5-х^-1)^-1=2^-2
5X ^ - 1 - 6 = 0 ( 5 / X ) = 6 X = 5/ 6 ----------------- 3 + 10X ^ - 1 = 0 10 / X = - 3 X = 10 : ( - 3 ) X = - 3 ( 1/3 ) ------------------ ( 5 - X^- 1 ) ^ - 1 = 2 ^ - 2 1 / ( 5 - X^-1 ) = 1 /4 5 - X ^ - 1 = 4 5 - 4 = X ^ - 1 1 / X = 1 X = 1